Hair dryer



FIG. 1 is a perspective front view of a hair dryer from above, showing our design;

FIG. 2 is a front view of the appliance;

FIG. 3 is a side view thereof;

FIG. 4 is a side view thereof;

FIG. 5 is a rear view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof. 

The ornamental design for a hair dryer, as shown and described. 